A Dark Matter Relic From Muon Anomalies

By G. B'elanger, Cédric Delaunay, S. Westhoff. 2015

160 citations recorded by the source corpus.

We show that the recently reported anomalies in $b\to s\mu^+\mu^-$ transitions, as well as the long-standing $g_\mu-2$ discrepancy, can be addressed simultaneously by a new massive abelian gauge boson with loop-induced coupling to muons. Such a scenario typically leads to a stable dark matter candidate with a thermal relic density close to the observed value. Dark matter in our model couples dominantly to leptons, hence signals in direct detection experiments lie well below the current sensitivity. The LHC, in combination with indirect detection searches, can test this scenario through distinctive signatures with muon pairs and missing energy.

Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/95aa702ba85087398a06215dfe894534e0ca638a

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Citations in the corpus

Patterns of New Physics in b → sℓ+ℓ− transitions in the light of recent data (2017, background): “I C 9μ = −C 10μ: This pattern can be achieved in Z ′ models with loop-induced couplings [53] or in Z ′ models with heavy vector-like fermions [54] which posses also LFUV.”
Continuing search for new physics in b → sμμ decays: two operators at a time (2019, background): “Some leptoquark models [46–52], and Z ′ models with loop-induced couplings or with heavy vector-like fermions [53–55], can give rise to CNP 9 = −CNP 10 scenarios.”
Flavour anomalies after the RK∗ measurement (2017, background): “3 Models with loop mediators The RK anomaly can be reproduced by one loop diagrams involving new scalars S and new fermions F with Yukawa couplings to SM fermions that allow for the Feynman diagram in figure 7a [31,65], see also [66].”
Review of lepton universality tests in B decays (2018, background): “s [170]. Another popular scenario is to require that CNP 9 = C NP 10, as it obeys the SU(2)L U(1)Y symmetry expected from SMEFT. This pattern can be achieved in Z0models with loop-induced couplings [212] or in Z0models with heavy vector-like fermions [180,181], or in Z0models with a gauged horizonta”